This was caught on the night of the The Gioi Vpop concert on June 4th:

Weell, if you thought it was a rash, you’re wrong. According to Noo himself, that huge red mark thing on his right arm that looks like he’s breaking out in hives or something deadly is nothing but a mere birthmark…… far the most intense birthday mark I have ever seen o.O.

Anyway, here are the rest of the on-stage pictures of the latest The Gioi Vpop show.